A silent pulley mechanism for opening and closing curtains

Abstract

The utility model relates to the field of curtains, and discloses a silent pulley mechanism for opening and closing curtains, including a suspension arm, wherein a plurality of hook installation positions are provided inside the suspension arm, one end of the suspension arm is fixedly connected to a suspension arm installation surface, a plurality of screw holes 1 are provided inside the suspension arm installation surface, a pulley main part 1 is provided at the bottom of the suspension arm, a pulley main part 2 is provided on one side of the pulley main part 1, a plastic-coated bearing is threadedly connected to the inside of the pulley main part 2, and a thread is provided on the outside of the plastic-coated bearing. In the utility model, the outer ring of the plastic-coated bearing is made of plastic material, and when the pulley mechanism runs on the curtain track, the plastic-coated bearing contacts the outside of the track and the lower side of the track, and the roller contacts the upper side of the track inside the track in a rolling friction manner, which effectively reduces the resistance encountered by the pulley mechanism during operation and reduces noise, and at the same time solves the problem that the pulley mechanism has an obvious sense of blockage and generates a large noise when the curtain track is started.

Description

Technical Field

[0001] The utility model relates to the field of curtains, in particular to a silent pulley mechanism for opening and closing curtains. Background Art

[0002] Most traditional curtain pulley mechanisms have wheels contacting the track. The advantage of this structure is that it can adapt to most curtain track application scenarios, but the disadvantages are also obvious. Whether it is a hand-pull without electricity or a hand-pull cloth touch start, the traditional pulley mechanism seems to be more laborious at the moment of starting, and it will produce a lot of noise during operation. After long-term use, the pulley of the mechanism may get stuck, causing the pulley mechanism to feel obviously blocked during operation, affecting the curtain pulling experience. At the same time, the existing traditional curtain pulley mechanism uses latches to connect the main parts of the pulley, and the limit of the latch itself must use additional parts as a booster, which requires additional material costs and labor assembly costs. Utility Model Content

[0003] In order to make up for the above shortcomings, the utility model provides a silent pulley mechanism for opening and closing curtains, aiming to improve the existing technology that it is more laborious at the moment of starting, and generates a large noise during operation. After long-term use, the pulley of the mechanism may get stuck, resulting in a significant blockage in the pulley mechanism during operation, affecting the curtain pulling experience. At the same time, the existing traditional opening and closing curtain pulley mechanism mostly uses pins to connect the main pulley parts, and the limit of the pin itself must use additional parts as an aid, which requires additional material costs and labor assembly costs.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a silent pulley mechanism for opening and closing curtains, including a hanging arm, a plurality of hook installation positions are opened inside the hanging arm, one end of the hanging arm is fixedly connected to a hanging arm installation surface, a plurality of screw holes are opened inside the hanging arm installation surface, a pulley main component 1 is arranged at the bottom of the hanging arm, a pulley main component 2 is arranged on one side of the pulley main component 1, a plastic-coated bearing is connected to the internal thread of the pulley main component 2, and a thread is arranged on the outer side of the plastic-coated bearing.

[0005] As a further description of the above technical solution:

[0006] The pulley main component two includes a pulley main component surface two, one side of the pulley main component surface two is rotatably connected to the side of the pulley main component one, an HDPE insert mounting hole one is opened inside the pulley main component surface two, a nut mounting hole is opened inside the pulley main component surface two, an HDPE insert mounting hole two is opened on the middle side of the pulley main component surface two, two latch mounting holes are opened inside the pulley main component surface two, two belt buckle mounting holes are opened on the upper side of the pulley main component surface two, a plastic-coated bearing mounting hole is opened on the lower side of the pulley main component surface two, a lifting ring mounting position two is opened on the lower side of the pulley main component surface two, a nut is arranged inside the nut mounting hole, two roller mounting positions two are fixedly connected to one side of the pulley main component surface two, HDPE inserts are installed in the HDPE insert mounting hole one and the HDPE insert mounting hole two, and a screw is threadedly connected inside the HDPE insert.

[0007] As a further description of the above technical solution:

[0008] The pulley main component includes a pulley main component surface 1, the upper side of the pulley main component surface 1 is arranged at the bottom of the boom, one side of the pulley main component surface is fixedly connected to a boom mounting position, a plurality of screw holes 2 are opened inside the boom mounting position, one side of the pulley main component surface is fixedly connected to two latch mounting holes 1, the side of the pulley main component surface 1 opposite to the latch mounting hole 1 is fixedly connected to two roller mounting positions 1, a rivet hole is opened on the middle side of the pulley main component surface 1, a belt buckle mounting hole is opened on the upper side of the pulley main component surface 1, a lifting ring mounting position 1 is opened on the lower side of the pulley main component surface 1, a roller is arranged between the two roller mounting positions 1, a latch hole is opened inside the roller, a lifting ring is installed inside the lifting ring mounting position 1, two screws are threadedly connected inside the screw hole 2, and a latch 1 is installed inside the latch mounting hole 1.

[0009] As a further description of the above technical solution:

[0010] A convex arc surface 1 is arranged on the outer side of the HDPE insert, and a convex arc surface 2 is arranged on the outer side of the HDPE insert.

[0011] As a further description of the above technical solution:

[0012] A roller is arranged between the two roller mounting positions.

[0013] As a further description of the above technical solution:

[0014] A second latch is installed inside the roller, and a rivet is installed inside the rivet hole.

[0015] As a further description of the above technical solution:

[0016] A roller is arranged on the outside of the rivet, and a roller hole is opened inside the roller.

[0017] As a further description of the above technical solution:

[0018] A reinforcing plate is installed at the lower side of the boom mounting position, the reinforcing plate is provided with screw holes, and the second screw is used to fix the boom and the reinforcing plate.

[0019] The utility model has the following beneficial effects:

[0020] 1. In the utility model, the outer ring of the plastic-coated bearing is made of plastic, and the plastic-coated bearing and the roller are diagonally distributed. When the pulley mechanism runs on the curtain track, the plastic-coated bearing contacts the outside of the track and the lower side of the track, and the roller contacts the upper side of the track inside the track in a rolling friction manner, which effectively reduces the resistance encountered by the pulley mechanism during operation and reduces the noise. At the same time, it solves the problem of obvious blockage and high noise generated by the pulley mechanism when the curtain track is started.

[0021] 2. In the utility model, the HDPE insert is made of polyethylene material, and a raised arc surface is provided on the surface of the HDPE insert, the height of the arc surface is higher than the surface of the pulley main part 2, and HDPE insert mounting hole 1 and HDPE insert mounting hole 2 are respectively provided on both sides of the pulley main part 2. After the HDPE insert is installed in the HDPE insert mounting hole 1 and the HDPE insert mounting hole 2, they are locked with screws, so that the arc surface on the insert contacts the curtain track when the pulley mechanism runs on the curtain track. The smaller contact area and the smooth surface of the insert make the pulley mechanism run more smoothly on the curtain track and generate less noise. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional diagram of a silent pulley mechanism for opening and closing curtains proposed by the utility model;

[0023] Figure 2 This is an exploded view of a silent pulley mechanism for opening and closing curtains proposed by the utility model (viewing angle 1);

[0024] Figure 3 This is an exploded view of a silent pulley mechanism for opening and closing curtains proposed by the utility model (viewing angle 2);

[0025] Figure 4 A structural diagram of a pulley main part of a curtain opening and closing silent pulley mechanism proposed by the utility model (viewing angle 1)

[0026] Figure 5 This is a structural schematic diagram of a pulley main component of a curtain opening and closing silent pulley mechanism proposed by the utility model (viewing angle 2);

[0027] Figure 6This is a structural schematic diagram of the second main pulley component of a silent pulley mechanism for opening and closing curtains proposed by the utility model (viewing angle 1);

[0028] Figure 7 A schematic diagram of the second structure of the pulley main part of a curtain opening and closing silent pulley mechanism proposed by the utility model (viewing angle 2)

[0029] Figure 8 This is a schematic diagram of the arm structure of a curtain opening and closing silent pulley mechanism proposed by the utility model;

[0030] Fig. 9 This is a schematic diagram of the plastic-coated bearing structure of a curtain opening and closing silent pulley mechanism proposed by the utility model;

[0031] Fig.10 This is a schematic diagram of the HDPE insert structure of a curtain opening and closing silent pulley mechanism proposed by the utility model;

[0032] Fig.11 This is a schematic diagram of the roller structure of a silent pulley mechanism for opening and closing curtains proposed by the utility model;

[0033] Fig.12 This is a schematic diagram of the roller structure of a silent pulley mechanism for opening and closing curtains proposed by the utility model.

[0034] Legend:

[0035] 1. Boom; 101. Hook installation position; 102. Boom installation surface; 103. Screw hole 1; 2. Pulley main part 1; 201. Screw hole 2; 202. Boom installation position; 203. Latch installation hole 1; 204. Roller installation position 1; 205. Rivet hole; 206. Belt buckle installation hole 1; 207. Pulley main part surface 1; 208. Eyelet installation position 1; 3. Plastic-coated bearing; 301. Thread; 4. Pulley main part 2; 401. Pulley main part surface 2; 402. HDPE insert installation hole 1; 403. Nut installation Hole; 404, HDPE insert installation hole two; 405, latch installation hole two; 406, belt buckle installation hole two; 407, plastic-coated bearing installation hole; 408, eyelet installation position two; 409, roller installation position two; 5, roller; 501, latch hole; 6, eyelet; 7, HDPE insert; 701, raised arc surface one; 702, raised arc surface two; 8, screw one; 9, latch one; 10, screw two; 11, reinforced plate; 12, nut; 13, latch two; 14, roller; 1401, roller hole; 15, rivet. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0037] Reference Figure 1-Figure 9 The utility model provides an embodiment: a silent pulley mechanism for opening and closing curtains, including a suspension arm 1, a plurality of hook installation positions 101 are provided inside the suspension arm 1, one end of the suspension arm 1 is fixedly connected to a suspension arm installation surface 102, a plurality of screw holes 103 are provided inside the suspension arm installation surface 102, a pulley main part 1 2 is provided at the bottom of the suspension arm 1, a pulley main part 2 4 is provided on one side of the pulley main part 1 2, a plastic-coated bearing 3 is threadedly connected to the internal part of the pulley main part 2 4, and a thread 301 is provided on the outer side of the plastic-coated bearing 3.

[0038] Specifically, one end of the boom 1 is fixed to the boom mounting surface 102 through a screw hole 103, and a reinforcing plate 11 is installed on the other side of the boom mounting surface 102, which effectively ensures the stability and safety of the boom. The pulley main part 1 2 and the pulley main part 2 4 form a sliding system, and the pulley main part 2 4 is equipped with a plastic-coated bearing 3. The plastic-coated bearing 3 is key because of its low friction and silent characteristics. The external thread 301 design of the plastic-coated bearing 3 allows it to fit tightly with the track. The plastic-coated bearing 3 and the roller 14 are diagonally distributed and work at the same time, reducing the resistance during sliding, and at the same time, through rolling friction, significantly reducing the noise during operation. When the curtain needs to be moved, the boom 1 drives the pulley main part 1 2 and the pulley main part 2, and the plastic-coated bearing 3, the roller 14, and the roller 5 roll on the track, achieving a smooth and almost silent sliding, which improves the comfort of the curtain opening and closing operation.

[0039] Reference Figure 6 and Figure 7The pulley main part 24 includes a pulley main part surface 2 401, one side of the pulley main part surface 2 401 is rotatably connected to one side of the pulley main part 1 2, an HDPE insert mounting hole 1 402 is provided inside the pulley main part surface 2 401, a nut mounting hole 403 is provided inside the pulley main part surface 2 401, an HDPE insert mounting hole 2 404 is provided on the middle side of the pulley main part surface 2 401, a pin mounting hole 2 405 is provided inside the pulley main part surface 2 401, and a A belt buckle mounting hole 406 is provided, a plastic-coated bearing mounting hole 407 is provided on the lower inner side of the pulley main component surface 401, a lifting ring mounting position 408 is provided on the lower inner side of the pulley main component surface 401, a nut 12 is provided inside the nut mounting hole 403, two roller mounting positions 409 are fixedly connected to one side of the pulley main component surface 401, HDPE insert 7 is installed inside the HDPE insert mounting hole 1 402 and the insert mounting hole 2 404, and a screw 8 is threadedly connected inside the HDPE insert 7.

[0040] Specifically, the pulley main part surface 2 401 is connected to the pulley main part 1 2 by rotation on one side, allowing the two parts to work together flexibly and enhancing the dynamic performance of the entire mechanism. The HDPE insert 7 is installed on the pulley main part surface 2 401 through the HDPE insert mounting hole 1 402 and the HDPE insert mounting hole 2 404. They have excellent wear resistance, reduce the friction with the track, improve the smoothness of sliding, and effectively reduce noise. The plastic-coated bearing 3 is installed in the plastic-coated bearing mounting hole 407. The plastic-coated bearing and the roller are diagonally distributed. When contacting the track, rolling friction is used to further reduce noise and resistance. The nut 12 is located in the nut mounting hole 403, and the nut is threadedly connected to the plastic-coated bearing to fix the plastic-coated bearing. At the same time, the pin mounting hole 2 405 is used to connect the pulley main part 1 2 and the pulley main part 2 4, and the roller mounting position 2 409 limits the position of the roller 5 to avoid disengagement. The second belt buckle mounting hole 406 and the second hanging ring mounting position 408 are used to connect the pulling device and the curtain hook respectively, which is convenient for operation and hanging of the curtain. Through the above design, the curved surface design of the HDPE insert 7, the rolling contact mode of the roller 5, the roller 14 and the plastic-coated bearing 3, the noise during operation is significantly reduced, and a silent effect is achieved.

[0041] Reference Figure 4 and Figure 5The pulley main part 2 includes a pulley main part surface 207, the upper side of the pulley main part surface 207 is arranged at the bottom of the boom 1, one side of the pulley main part surface 207 is fixedly connected to the boom mounting position 202, and the boom mounting position 202 is provided with a plurality of screw holes 201, one side of the pulley main part surface 207 is fixedly connected to two latch mounting holes 203, and the side of the pulley main part surface 207 opposite to the latch mounting hole 203 is fixedly connected to two roller mounting positions 204, and the pulley main part surface 207 is fixedly connected to the two roller mounting positions 204. A rivet hole 205 is provided on the middle side of 207, a belt buckle mounting hole 206 is provided on the upper side of the pulley main component surface 207, a lifting ring mounting position 208 is provided on the lower side of the pulley main component surface 207, a roller 5 is provided between two roller mounting positions 204, a pin hole 501 is provided inside the roller 5, a lifting ring 6 is installed inside the lifting ring mounting position 208, a screw 2 10 is threadedly connected inside the screw hole 201, and a pin 9 is installed inside the pin mounting hole 203.

[0042] Specifically, there are multiple hook installation positions 101 in the boom 1 for installing curtain hooks, which can conveniently hang curtain fabrics. One end of the boom 1 is fixed to the boom installation surface 102 by screws, providing a solid support point. The screw hole 103 inside the boom installation surface 102 allows the installation of screws to ensure the stability of the boom 1. The pulley main part 1 2 is connected to the pulley main part 2 4, and the plastic-coated bearing 3 inside the pulley main part 2 4 is connected by a thread. This design helps to reduce friction and provide smoother operation. The outer side of the plastic-coated bearing 3 has a thread 301. When it contacts the track, rolling friction is adopted. In this way, the resistance can be reduced during the operation of opening and closing the curtain, the noise is reduced, and the stability and service life of the pulley mechanism are improved. When the curtain is opened and closed, the boom 1 drives the plastic-coated bearing 3 through the pulley main parts 1 2 and 4. The rolling friction between the bearing and the track reduces the resistance at startup and the noise during operation, thereby achieving a silent effect.

[0043] Reference Figure 1 - Fig.12 A roller 5 is arranged between the two roller mounting positions 409, a raised arc surface 701 is arranged on the outer side of the HDPE insert 7, a raised arc surface 702 is arranged on the outer side of the HDPE insert 7, a roller 5 is arranged between the roller mounting positions 409, a latch 13 is installed inside the roller 5, a rivet 15 is installed inside the rivet hole 205, a roller 14 is arranged on the outer side of the rivet 15, a roller hole 1401 is opened inside the roller 14, a reinforcing plate 11 is installed on the lower side of the boom 1 mounting position, the reinforcing plate 11 is provided with screw holes, and screws 10 are used to fix the boom 1 and the reinforcing plate 11.

[0044] Specifically, the reinforcing plate not only effectively strengthens the strength of the boom 1 and improves the safety and stability of the pulley mechanism during operation on the curtain track, but also effectively limits the pin connecting the pulley main component 1 2 and the pulley main component 2 4 to prevent the pin from falling out of the mounting hole; the HDPE insert is installed on the HDPE insert mounting position set on the pulley main component 1 2, and the HDPE insert 7 is made of polyethylene material, has good wear resistance, and low surface roughness. The surface of the insert is provided with an arc surface. When the pulley mechanism is running, the arc surface set on the insert is in sliding contact with the curtain track, and the contact area is reduced. The smooth surface of the insert has a small friction coefficient between the two, and the pulley mechanism runs more smoothly in the curtain track; the roller 5 is made of plastic material, and the pin 2 13 is passed through the roller mounting hole and the pin hole 501 in sequence. When the pulley mechanism runs in the curtain track, the roller 5 contacts the track, and the contact mode is rolling friction, which effectively reduces the static friction coefficient between the two and reduces the resistance encountered by the pulley mechanism during operation. The roller 5 is made of plastic and has good wear resistance. The noise generated when colliding with the track is smaller, and the pulley mechanism runs more smoothly on the track.

[0045] Working principle: First, the pulley main part 1 2 and the pulley main part 2 4 are connected to the plastic-coated bearing 3 through threads. The plastic material of the plastic-coated bearing 3 ensures low friction when in contact with the track, effectively reducing the difficulty of starting the pulley mechanism and the resistance during operation, and improving the experience of manually pulling the curtain. The outer ring of the plastic-coated bearing 3 is made of plastic and has good wear resistance. When the pulley mechanism runs on the curtain track, the outer ring of the bearing contacts the track in a rolling friction manner. The pulley mechanism runs more smoothly on the curtain track and generates less noise. The roller is embedded with a latch to ensure the close fit between the pulley and the track, and the HDPE insert on the pulley main part 2 4 further reduces the contact pressure with the track through a convex arc design, improving the smoothness of the sliding. At the same time, the reinforced version 11 effectively strengthens the structural strength of the boom, and effectively limits the latch 9, enhancing the stability of the entire mechanism, while saving unnecessary material and manpower expenses and saving costs. During the curtain opening and closing operation, when the pulley slides along the track, the boom 1 is guided by the pulley main part 1 2 and the pulley main part 2 4, and the operation of the entire mechanism is almost silent because the pulley mechanism is more reasonably designed, mostly using rolling friction and silent structure.

[0046] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A silent pulley mechanism for opening and closing a curtain, comprising a suspension arm (1), characterized in that: The boom (1) is provided with a plurality of hook installation positions (101) inside, one end of the boom (1) is fixedly connected to a boom installation surface (102), a plurality of screw holes (103) are provided inside the boom installation surface (102), a pulley main component (2) is provided at the bottom of the boom (1), a pulley main component (4) is provided on one side of the pulley main component (2), a plastic-coated bearing (3) is threadedly connected inside the pulley main component (4), and a thread (301) is provided on the outside of the plastic-coated bearing (3).

2. A curtain opening and closing silent pulley mechanism according to claim 1, characterized in that: The pulley main component 2 (4) includes a pulley main component surface 2 (401), one side of the pulley main component surface 2 (401) is rotatably connected to one side of the pulley main component 1 (2), an HDPE insert mounting hole 1 (402) is provided inside the pulley main component surface 2 (401), a nut mounting hole (403) is provided inside the pulley main component surface 2 (401), an HDPE insert mounting hole 2 (404) is provided on the middle side of the pulley main component surface 2 (401), a pin mounting hole 2 (405) is provided inside the pulley main component surface 2 (401), and a leather mounting hole is provided on the upper side of the pulley main component surface 2 (401). A buckle mounting hole (406) is provided, a plastic-coated bearing mounting hole (407) is provided on the lower inner side of the pulley main component surface (401), a lifting ring mounting position (408) is provided on the lower inner side of the pulley main component surface (401), a nut (12) is provided inside the nut mounting hole (403), two roller mounting positions (409) are fixedly connected to one side of the pulley main component surface (401), HDPE inserts (7) are installed inside the HDPE insert mounting hole (402) and the HDPE insert mounting hole (404), and a screw (8) is threadedly connected inside the HDPE insert (7).

3. The curtain opening and closing silent pulley mechanism according to claim 1, characterized in that: The pulley main component (2) includes a pulley main component surface (207), the upper side of the pulley main component surface (207) is arranged at the bottom of the boom (1), one side of the pulley main component surface (207) is fixedly connected to a boom mounting position (202), a plurality of screw holes (201) are provided inside the boom mounting position (202), one side of the pulley main component surface (207) is fixedly connected to two latch mounting holes (203), the side of the pulley main component surface (207) opposite to the latch mounting holes (203) is fixedly connected to two roller mounting positions (204), the pulley main component surface (207) is fixedly connected to the bottom of the pulley main component surface (207), and the pulley main component surface (207) is fixedly connected to the bottom of the pulley main component surface (207). A rivet hole (205) is provided on the middle side of the interior of the pulley main component surface (207), a belt buckle mounting hole (206) is provided on the upper side of the interior of the pulley main component surface (207), a lifting ring mounting position (208) is provided on the lower side of the interior of the pulley main component surface (207), a roller (5) is arranged between the two roller mounting positions (204), a latch hole (501) is provided inside the roller (5), a lifting ring (6) is installed inside the lifting ring mounting position (208), a screw (10) is threadedly connected inside the screw hole (201), and a latch (9) is installed inside the latch mounting hole (203).

4. The curtain opening and closing silent pulley mechanism according to claim 2, characterized in that: The outer side of the HDPE insert (7) is provided with a convex curved surface 1 (701), and the outer side of the HDPE insert (7) is provided with a convex curved surface 2 (702).

5. The curtain opening and closing silent pulley mechanism according to claim 2, characterized in that: A roller (5) is arranged between the two roller mounting positions (409).

6. The curtain opening and closing silent pulley mechanism according to claim 3, characterized in that: A second latch pin (13) is installed inside the roller (5), and a rivet (15) is installed inside the rivet hole (205).

7. The curtain opening and closing silent pulley mechanism according to claim 6, characterized in that: A roller (14) is arranged on the outside of the rivet (15), and a roller hole (1401) is opened inside the roller (14).

8. The curtain opening and closing silent pulley mechanism according to claim 3, characterized in that: A reinforcing plate (11) is installed at the lower side of the mounting position of the boom (1), the reinforcing plate (11) is provided with screw holes, and the second screw (10) is used to fix the boom (1) and the reinforcing plate (11).

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